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Female germ cell renewal during the annual reproductive cycle in Ostariophysians fish
(2013-03-01)
The objective was to characterize female germ cell renewal during the annual reproductive cycle in two species of ostariophysian fish with distinct reproductive strategies: a siluriform, Pimelodus maculatus, in which oocyte ...
Editorial: Buffalo Health and Production
(2022-02-11)
Thelytokous parthenogenesis in the fungus-gardening ant Mycocepurus smithii (Hymenoptera: Formicidae)
(2009-08-26)
The general prevalence of sexual reproduction over asexual reproduction among organisms testifies to the evolutionary benefits of recombination, such as accelerated adaptation to changing environments and elimination of ...
Reproductive behavior of Eidmanacris corumbatai garcia (Orthoptera: Phalangopsidae)
(2006-10-05)
Adult males of Eidmanacris corumbatai Garcia have reduced tegmina without stridulatory apparatus. For this reason, they developed other means of intra-specific communication. During courtship, the males use a combination ...
Influência da morfologia escrotal nas características do sêmen e seus efeitos na fertilidade de caprinos.
(A Hora Veterinária, Porto Alegre, v. 5, n. 29, p. 66-69, jan./fev., 1986., 1986)
Spermiophagy in the spermatheca of Melipona bicolor lepeletier, 1836 (Hymenoptera, Apidae, Meliponini)
(2002-12-28)
The presence of spermatozoa in vesicles in the cytoplasm of the epithelial cells that constitute the spermathecal wall of Melipona bicolor queen (Meliponini) is discussed in relation to the organ structure. The epithelial ...
Reproductive changes in male rats treated perinatally with an aromatase inhibitor.
(2002-01-01)
The effects of maternal exposure to aromatase inhibitor during the perinatal period of sexual brain differentiation were studied. The fertility was assessed in adult, male rat offspring of aromatase inhibitor-treated dams. ...
Reproductive disorders affecting 21-month-old bulls assessed by andrological examinationAfecções reprodutivas que acometem tourinhos (21 meses) avaliados por meio de exame andrológico
(2020-01-01)
The objective of this study was to identify the prevalence of the main pathologies that affect the genital organs of young bulls. We used a database that contained data for 6,408 young Nelore bulls. The data were collected ...
Does the male reproductive performance depend on the early lactation milk in rats?
(1996-01-01)
This study investigated the role of the early lactation milk (ELM) on the male reproductive performance and the participation of GnRH on this effect in Wistar rats. Newborn males were divided into three experimental groups: ...